Applications of Neutron Scattering in Technical Catalysis: Characterisation of Hydrogenous Species on/in Unsupported and Supported Palladium View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2021-04-24

AUTHORS

Peter W. Albers, Stewart F. Parker

ABSTRACT

Recent results from inelastic neutron scattering (INS) measurements are reviewed that show the synergy between research on hydrogen adsorption/absorption on/in catalysts and chemical engineering. The proton dynamics of catalysts for large scale reactor technology are compared. The focus is the identification and quantification of hydrogenous species on, and inside, fresh, hydrogenated and dehydrogenated palladium black and supported palladium catalysts of different particle size, type of support and, therefore, morphology. INS studies of in-situ hydrogenation/ dehydrogenation of catalysts of 25–60 g size per sample are carried out in stainless steel cans as a function of varying hydrogen pressures. Differences in hysteresis effects in retaining hydrogen inside the catalyst in desorption from palladium hydrides and hydrogen bonding in adsorption sites in varying particle morphologies on different supports were evaluated. This aids the understanding of hydrogen/palladium interactions in catalytic processes with varying local hydrogen partial pressure, e.g. in loop reactors. The importance of the measured on-top Pd–H site in catalytic hydrogenation reactions is discussed together with previous INS results on the degree of deactivation of a technical catalyst by molecular blocking of the on-top site. More... »

PAGES

603-613

References to SciGraph publications

  • 2016-04-23. Inelastic and Quasi-Elastic Neutron Scattering in NEUTRON SCATTERING AND OTHER NUCLEAR TECHNIQUES FOR HYDROGEN IN MATERIALS
  • 2002-12. A Study of Nitrobenzene Hydrogenation Over Palladium/Carbon Catalysts in CATALYSIS LETTERS
  • 1997. Neutron scattering studies of metal hydrogen systems in HYDROGEN IN METALS III
  • 2011. Hydrogen Peroxide in SPRINGERREFERENCE
  • 2021-05-19. The Characterisation of Hydrogen on Nickel and Cobalt Catalysts in TOPICS IN CATALYSIS
  • 2007. Hydrogen and Hydrogen-Storage Materials in NEUTRON APPLICATIONS IN EARTH, ENERGY AND ENVIRONMENTAL SCIENCES
  • 2018. Materials for Solid Catalysts in SPRINGER HANDBOOK OF MATERIALS DATA
  • 1978. Hydrogen in palladium and palladium alloys in HYDROGEN IN METALS II
  • 1992. Dynamics of hydrogen in intermetallic hydrides in HYDROGEN IN INTERMETALLIC COMPUNDS II
  • 2003-12. Major and Minor Reactions in Fischer–Tropsch Synthesis on Cobalt Catalysts in TOPICS IN CATALYSIS
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/s11244-021-01424-1

    DOI

    http://dx.doi.org/10.1007/s11244-021-01424-1

    DIMENSIONS

    https://app.dimensions.ai/details/publication/pub.1137464806


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